Leticia Pollock -- cofounder, Panther Coffee

'My best mistake as an entrepreneur was to not do my homework when we decided to move to a new city and open a business somewhere (where) we didn't know anyone. If we knew how hard it would be, I probably (would have) never done it.'

Leah Busque -- founder and CEO, TaskRabbit

Goldman Sachs

'I think it was waiting too long to actually start my company. I was at a big corporation for over eight years. It was a really cushy job, and it was a big decision to take that leap and leave. But once I did, I realised that this was something that -- I had control over my own destiny and I could really change the world in the way I thought it should be.'

Ramji Srinivasan -- cofounder and CEO, Counsyl

Goldman Sachs

'My best mistakes are the ones that I honestly had good intuition for and then the market or whatever didn't work out. And I never feel bad about those because I trusted my intuition. The ones I feel the worst about is when I didn't listen to my intuition -- and those are ten times worse, inexcusable mistakes.'

Ken Lin -- cofounder, Credit Karma

Goldman Sachs

'Well my best mistake as an entrepreneur was actually not selling too early. I remember we had a couple offers along the way, and, you know, we lamented over the timing of the deal and ultimately decided no. And we would have never been the company that we are today if we sort of took the easy way out.'

Lily Kanter -- cofounder and CEO, Serena & Lily

Goldman Sachs

'I would probably say my best mistake is not taking enough money in the very first one or two rounds. I had a great friend of mine who's an entrepreneur who said, you know, when they're passing the hors d'oeuvres, take five.'

David Solomon -- cohead of investment banking, Goldman Sachs

Goldman Sachs

'I guess the best one is the one that does the least damage to the business. So there isn't a day that I wake up and I don't make a mistake -- you just hope that in some way, shape, or form, they're not the kinds of mistakes that really affect the business.'

George Lee -- CIO, investment banking, Goldman Sachs

Goldman Sachs

'I think every mistake is the best mistake if you consider it and learn something from it and it helps you move forward.'